IEC TR 62697-3:2018 PDF

Name: IEC TR 62697-3:2018 — Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids - Part 3: Test method for quantitative determination of elemental sulfur
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Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids - Part 3: Test method for quantitative determination of elemental sulfur

Название (английский):

IEC TR 62697-3:2018

Test methods for quantitative determination of corrosive sulfur compounds in unused and used insulating liquids - Part 3: Test method for quantitative determination of elemental sulfur

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 24
Дата публикации:: 14 февраля 2018 г.
Издание:: IEC TR 62697 edition 1 version 1
ICS:: 29.040.10

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Описание (английский):

IEC TR 62697-3:2018(E) specifies a test method for the quantitative determination of elemental sulfur in used and unused insulating liquids over a 2 mg kg–1 to 400 mg kg–1 concentration range.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты IEC

Overview

IEC TR 62697-3:2018 is an IEC Technical Report that specifies a validated test method for the quantitative determination of elemental sulfur in unused and used insulating liquids. Published in 2018 by IEC TC 10 (Fluids for electrotechnical applications), the report covers analysis across a concentration range of 2 mg·kg–1 to 400 mg·kg–1. It is part of the IEC 62697 series addressing corrosive sulfur compounds in insulating oils.

Key topics and requirements

Scope and purpose: Measurement of elemental sulfur in insulating liquids to assess corrosive sulfur risk.

Analytical methods covered:

Gas chromatography (GC) with multiple detectors (Electron Capture Detector – ECD, Flame Photometric Detector – FPD, and Mass Spectrometer – MS).
Differential pulse voltammetry (DPV) as an alternative electrochemical technique.

Sampling and pre-treatment: Requirements for representative sampling and sample preparation prior to analysis.

Apparatus and reagents:

Basic instrumentation: analytical balance, GC system, DPV setup.
Reference materials: elemental sulfur standards, diphenyl disulfide (DPDS), and blank oil for matrix matching.
Solvents, high-purity gases and reagents specified for accurate measurement.

Instrument set-up and calibration:

GC parameters, detector settings, carrier gas and injection guidance.
Calibration procedures, internal standard usage and response factor determination for reliable quantification.

Interferences and matrix effects: Guidance on co-eluting compounds, detector-specific interferences, and matrix-related bias.

Performance and reporting:

Precision data provided: detection limit, repeatability and reproducibility assessments.
Reporting format and result presentation, including chromatogram interpretation.

Applications and users

Transformer and power equipment manufacturers and their quality departments use the method to ensure insulating fluids meet corrosion-safety specifications.

Utilities and asset owners rely on elemental sulfur testing as part of condition monitoring and failure-prevention programs for transformers and switchgear.

Independent test laboratories and chemical analysis service providers apply the procedures for routine and forensic oil analysis.

Standards developers and regulators reference the report when setting acceptance criteria for corrosive sulfur in insulating oils.

Related standards

Part of the IEC 62697 series:

Part 1: Test method for dibenzyl disulfide (DBDS)
Part 2: Test method for total corrosive sulfur (TCS)

Useful when used alongside standards for insulating oil sampling and transformer maintenance.

Keywords: IEC TR 62697-3, elemental sulfur, insulating liquids, corrosive sulfur, gas chromatography, differential pulse voltammetry, transformer oil testing, insulating oil analysis.

IEC TR 62697-3:2018 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

Технические детали

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